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[Deep white matter hyperintensity in occipital lobe on T2 weighted magnetic resonance imaging]
1Department of Pediatrics, School of Medicine, University of Tokushima.
Abstract:
Magnetic resonance imaging (MRI) was performed in 270 patients with various neurologic complaints (1-15 Y) with a 0.5 tesla superconducting imaging system (MRT-50 A, Toshiba Co.) using a field echo sequence (TR/TE: 300 ms/14 ms) and a spine echo sequence (TR/TE: 2,000 ms/100 ms or 2,000 ms/120 ms, and 2,000 ms/30 ms). The slice thickness was 10 mm. Hyperintensity areas on T2-weighted images were noted at the occipital lobe in 33 patients (12.2%). Twenty-seven of them had hyperintensity within the deep white matter, which revealed iso- or hypointensity on T1-weighted images. The diagnosis for the 27 patients included medulloblastoma after multidisciplinary therapy (1), congenital heart disease (1), neurofibromatosis (1), tuberous sclerosis (1), congenital muscular dystrophy (1), congenital myotonic dystrophy (2), febrile convulsion (2), autism (3), epilepsy (9) and unknown causes (6). Because the hyperintensity areas are age-dependent, they may result from delayed myelination in the central nervous system.
Insights
Magnetic resonance imaging (MRI) revealed T2-weighted hyperintensities in the occipital lobe of pediatric patients. These findings may indicate delayed myelination in the central nervous system, particularly in children with various neurological complaints.
Area of Science:
- Neurology
- Radiology
- Pediatrics
Context:
- Magnetic resonance imaging (MRI) is a crucial diagnostic tool for pediatric neurological disorders.
- Occipital lobe hyperintensities on T2-weighted images can be indicative of various underlying pathologies in children.
- Understanding the prevalence and potential causes of these findings is essential for accurate diagnosis and management.
Purpose:
- To investigate the occurrence and potential causes of T2-weighted hyperintensities in the occipital lobe of pediatric patients presenting with neurological complaints.
- To correlate imaging findings with patient diagnoses and explore potential etiological factors, such as delayed myelination.
Summary:
- 270 pediatric patients (1-15 years) with neurologic complaints underwent MRI using a 0.5 tesla system.
- Hyperintensity areas in the occipital lobe on T2-weighted images were observed in 33 patients (12.2%).
- Of these, 27 patients showed deep white matter hyperintensities, potentially linked to delayed myelination, with diagnoses including epilepsy, autism, and congenital disorders.
Impact:
- This study highlights the significance of occipital lobe T2-weighted hyperintensities as a potential imaging biomarker in pediatric neurology.
- Findings suggest delayed myelination as a possible cause, necessitating further research into its developmental implications.
- The results aid clinicians in interpreting MRI findings in children with neurological symptoms, improving diagnostic accuracy.